A dirty air filter can have a significant impact on the performance of your air conditioner. It restricts the flow of cold air, causing it to build up inside the unit and lower the internal temperature. This can lead to ice forming on the coils, putting more pressure on the air conditioner and causing it to produce a lot of heat. This can be especially damaging to the compressor, one of the most important and expensive components of an air conditioning system.
To avoid this, you should change your air filter approximately every three months. However, you should check it monthly for signs of visible buildup and replace it if necessary. If you neglect this task, the filter in your HVAC system will become clogged with dirt and dust, reducing the efficiency of your air conditioner. This can lead to hot or cold spots throughout your home when your HVAC system is working, or an incorrect temperature reading from your thermostat.
In addition to this, a clogged air filter can cause a lack of air flow to the evaporator or cooling coils, resulting in the refrigerant in the evaporator coils becoming much colder. This can lead to an increase in your electricity bill. To prevent this from happening, you should keep your air conditioner well-maintained and running efficiently for longer by changing the air filter regularly. When washing the air filter, rinse it with clean, warm water and shake it to drain excess water trapped in the filter.
Even if you don't suffer from allergies at this time and don't notice any obvious air quality problems, you should change this air filter every 1-3 months. Doing so will restore proper airflow through the ventilation system and help keep your monthly utility bills low.